Abstract: The induction coil sensor is traditionally used in the wire rope nondestructive inspection. As the output of coil sensor is related to the velocity of the wire rope, the signal will be compressed or stretched in different velocities. The impact of the velocity can be effectively overcome with Hall sensors. In this paper, a wire rope non-destructive system that is based on Hall sensor array is designed. This system achieves not only the accurate axial positioning of the defect, but also the circumferential distribution of the defect. The dimension for defect detection is improved in more details. Meanwhile, local pixel sum of magnetic flux leakage binary image is utilized to implement the quantitative measurement of defects. The result shows the good performance of the system.